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Archive for May, 2015

Can you measure cloth samples using a concentric ring with an electrode in surface resistance mode?

May 6th, 2015 No comments

The challenge of measuring fabrics is that it is not a solid and smooth surface, like sheet metal or plastic films, but rather a surface with lots of texture, meaning less surface area and dispersed discrete contact points.  The cloth materials can range from a textured continuous surface to mesh-like with lots of repeated holes, mostly air.

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How to measure resistivity in ohms/square with a resistance instrument?

May 6th, 2015 No comments

Although the PRF-912B Miniature Concentric Ring was designed to work with Prostat resistance meters, it is compatible to work with other meghometers as long as they are able to work BNC adaptor and cable as long as you have a resistance instrument that supplies a constant defined voltage of <10, 10 and 100V (depending on resistance being measured). If this is the case then you could use the PRF-912B with a third party megger.

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